Renaming fields name

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1

I have to rename the field name being received from telegraf. I do understand we have processor plugin which rename.replace which can do it. But I am stuck where 2 different fields have same name for 2 different metric name.
For e.g.
{“fields”:{“total”:1000},“name”:“mem”,“tags”:{“host”:“abc”},“timestamp”:1531232}
{“fields”:{“total”:1000},“name”:“disk”,“tags”:{“host”:“abc”},“timestamp”:1531232}

Now I want rename, field total as phymem in mem measaurement while field total as phydisk in disk measurement.
How do we achieve this?

2

Setup two processors, and use namepass to control which measurements pass through them. It should look something like:

[[processors.rename]]
  namepass = ["disk"]
  [[processors.rename.replace]]
    field = "total"
    dest = "phydisk"

[[processors.rename]]
  namepass = ["mem"]
  [[processors.rename.replace]]
    field = "total"
    dest = "phymem"
3

Thanks for the quick help. It helped a lot.